JP2001212933A - Method for forming inspecting data of print inspecting device - Google Patents

Method for forming inspecting data of print inspecting device

Info

Publication number
JP2001212933A
JP2001212933A JP2000025036A JP2000025036A JP2001212933A JP 2001212933 A JP2001212933 A JP 2001212933A JP 2000025036 A JP2000025036 A JP 2000025036A JP 2000025036 A JP2000025036 A JP 2000025036A JP 2001212933 A JP2001212933 A JP 2001212933A
Authority
JP
Japan
Prior art keywords
data
print
printing
inspection
inspecting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2000025036A
Other languages
Japanese (ja)
Other versions
JP3680675B2 (en
Inventor
Tomohiro Wakukawa
朝宏 湧川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2000025036A priority Critical patent/JP3680675B2/en
Publication of JP2001212933A publication Critical patent/JP2001212933A/en
Application granted granted Critical
Publication of JP3680675B2 publication Critical patent/JP3680675B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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  • Screen Printers (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Electric Connection Of Electric Components To Printed Circuits (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a method for forming an inspection data of a print inspecting device capable of improving an inspecting accuracy by a simple method. SOLUTION: The method for forming the inspection data used for the print inspecting device for inspecting a print state after screen printing by an image recognition comprises the steps of acquiring two-dimensional data of a printing site to be inspected by imaging a master base printed with a cream solder, inputting thickness data of a screen mask used for printing as height data of the site, and forming inspection data representing a three-dimensional shape of the site based on the two-dimensional data and the height data. Thus, a good accuracy of the height data difficult to visually decide the master base can be assured, and print inspection data of high reliability can be easily formed by a simple method.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、基板に印刷された
クリーム半田の印刷状態を検査する印刷検査装置の検査
用データの作成方法に関するものである。
[0001] 1. Field of the Invention [0002] The present invention relates to a method for generating inspection data of a print inspection apparatus for inspecting a printing state of cream solder printed on a substrate.

【0002】[0002]

【従来の技術】電子部品の実装においては、基板への電
子部品の搭載に先立って基板の表面にクリーム半田が塗
布される。クリーム半田塗布の方法としてはスクリーン
印刷による方法が広く用いられており、印刷工程の後に
はクリーム半田の印刷状態を検査する印刷検査が行われ
る。この印刷検査は、印刷後の基板をカメラにより撮像
し、撮像結果を画像処理することにより印刷部位に正し
くクリーム半田が印刷されているか否かを判定するもの
である。そして印刷検査に先立って、検査対象基板に対
応した検査用データが印刷検査装置に入力される。
2. Description of the Related Art In mounting electronic components, cream solder is applied to the surface of the substrate prior to mounting the electronic component on the substrate. As a method of applying cream solder, a screen printing method is widely used, and after the printing process, a printing inspection for inspecting a printing state of the cream solder is performed. In this print inspection, a printed board is imaged by a camera, and the imaged result is subjected to image processing to determine whether or not cream solder is correctly printed on a printed portion. Then, prior to the print inspection, inspection data corresponding to the inspection target substrate is input to the print inspection device.

【0003】従来この検査用データは種々の方法によっ
て作成されており、例えば印刷に用いられるマスクのパ
ターン孔の位置などのデータを数値データとして入力す
る方法や、印刷済の基板の中から印刷状態が良好と思わ
れる基板を選んでマスター基板とし、このマスター基板
を検査装置に認識させる方法などが用いられていた。こ
のマスター基板を認識することにより検査用データを作
成する方法は、管理の面倒な数値データを必要とせずマ
スクの実物があれば簡単に作成できることから、一般に
広く用いられている。
Conventionally, this inspection data has been created by various methods, for example, a method of inputting data such as the position of a pattern hole of a mask used for printing as numerical data, or a method of printing from a printed substrate. A method was adopted in which a substrate considered to be good was selected as a master substrate, and this master substrate was recognized by an inspection apparatus. The method of creating inspection data by recognizing the master substrate is generally widely used because it does not require complicated numerical data for management and can be easily created if there is a real mask.

【0004】[0004]

【発明が解決しようとする課題】しかしながら上記マス
ター基板自体の良否判定、すなわち印刷部位にクリーム
半田が正常に印刷されているか否かを判定することは容
易でなく、特に印刷高さについては目視による良否判定
が困難であることから、マスター基板を撮像して得られ
た検査用データは、信頼性に欠けるものであった。この
ため、従来の印刷後検査には検査用データの信頼性に起
因して検査精度が確保されないという問題点があった。
However, it is not easy to judge the quality of the master substrate itself, that is, to judge whether the cream solder is normally printed on the printed portion. In particular, the printing height is visually checked. The inspection data obtained by imaging the master substrate lacks reliability because it is difficult to determine the quality. For this reason, the conventional post-print inspection has a problem that the inspection accuracy cannot be ensured due to the reliability of the inspection data.

【0005】そこで本発明は、簡便な方法で検査精度を
向上させることができる印刷検査装置の検査用データの
作成方法を提供することを目的とする。
Accordingly, an object of the present invention is to provide a method for creating inspection data of a print inspection apparatus which can improve inspection accuracy by a simple method.

【0006】[0006]

【課題を解決するための手段】本発明の印刷検査装置の
検査用データの作成方法は、スクリーン印刷後の基板を
撮像し印刷されたクリーム半田の印刷状態を画像認識に
より検査する印刷検査装置に用いられる検査用データの
作成方法であって、クリーム半田が印刷されたマスター
基板を撮像することにより検査対象の印刷部位の2次元
データを取得すると共に、印刷に用いられるスクリーン
マスクの厚みデータを前記印刷部位の高さデータとして
取り込み、前記2次元データと高さデータに基づいて前
記印刷部位の3次元形状を表す検査用データを作成する
ようにした。
According to the present invention, there is provided a method for preparing inspection data of a print inspection apparatus, wherein a print inspection apparatus for imaging a board after screen printing and inspecting a printed state of printed cream solder by image recognition. A method for creating inspection data to be used, wherein two-dimensional data of a printed portion to be inspected is acquired by imaging a master substrate on which cream solder is printed, and the thickness data of a screen mask used for printing is obtained. Inspection data representing a three-dimensional shape of the print part is created based on the two-dimensional data and the height data, as height data of the print part.

【0007】本発明によれば、印刷に用いられるスクリ
ーンマスクの厚みデータを印刷部位の高さデータとして
取り込み、マスター基板より得られた2次元データと高
さデータに基づいて印刷部位の3次元形状を表す検査用
データを作成することにより、簡便な方法で信頼性の高
い印刷検査用データを容易に作成することができる。
According to the present invention, thickness data of a screen mask used for printing is taken in as height data of a printing portion, and the three-dimensional shape of the printing portion is determined based on the two-dimensional data and height data obtained from the master substrate. By creating the inspection data representing the above, highly reliable print inspection data can be easily created by a simple method.

【0008】[0008]

【発明の実施の形態】次に本発明の実施の形態を図面を
参照して説明する。図1は本発明の一実施の形態の印刷
検査装置の斜視図、図2(a)は本発明の一実施の形態
の検査対象基板およびスクリーンマスクの斜視図、図2
(b)は本発明の一実施の形態の検査対象基板およびス
クリーンマスクの部分拡大斜視図、図3は本発明の一実
施の形態の印刷検査の検査用データ作成のフロー図であ
る。
Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a perspective view of a print inspection apparatus according to one embodiment of the present invention, and FIG. 2A is a perspective view of a substrate to be inspected and a screen mask according to one embodiment of the present invention.
FIG. 3B is a partially enlarged perspective view of a substrate to be inspected and a screen mask according to one embodiment of the present invention, and FIG. 3 is a flowchart of inspection data creation for print inspection according to one embodiment of the present invention.

【0009】まず図1を参照して印刷検査装置の構造を
説明する。図1において架台1上に水平に固定されたベ
ース部材2上面には、搬送コンベア3が配設されてい
る。搬送コンベア3は前工程であるスクリーン印刷工程
から送られる基板4を搬送する。基板4上面には、所定
のパターンでクリーム半田5が印刷されている。
First, the structure of the print inspection apparatus will be described with reference to FIG. In FIG. 1, a conveyor 3 is disposed on an upper surface of a base member 2 fixed horizontally on a gantry 1. The transport conveyor 3 transports the substrate 4 sent from the screen printing process which is the previous process. On the upper surface of the substrate 4, cream solder 5 is printed in a predetermined pattern.

【0010】搬送コンベア3に沿って長手方向にX軸テ
ーブル6が配設されており、X軸テーブル6にはY軸テ
ーブル7が結合されている。Y軸テーブル7にはカメラ
8が装着されており、X軸テーブル6およびY軸テーブ
ル7を駆動することにより、カメラ8は水平移動し、搬
送コンベア3上の基板4を撮像する。この撮像結果を図
外の画像認識手段で3次元的に認識することにより、基
板4上面に所定のパターンで正しくクリーム半田5の印
刷が行われているか否か、すなわち印刷されたクリーム
半田5の基板4上における平面位置・形状および印刷高
さを検査する。
An X-axis table 6 is provided in the longitudinal direction along the conveyor 3, and a Y-axis table 7 is connected to the X-axis table 6. A camera 8 is mounted on the Y-axis table 7. By driving the X-axis table 6 and the Y-axis table 7, the camera 8 moves horizontally and captures an image of the substrate 4 on the conveyor 3. This imaging result is three-dimensionally recognized by an image recognition unit (not shown) to determine whether or not the cream solder 5 is correctly printed on the upper surface of the substrate 4 in a predetermined pattern, that is, whether the printed cream solder 5 The planar position and shape on the substrate 4 and the printing height are inspected.

【0011】次に図2を参照して印刷検査対象の基板4
および検査項目の詳細について説明する。図2(a)に
おいて、基板4上にはクリーム半田5が印刷されてい
る。クリーム半田5が印刷されるべき印刷部位は基板4
の電極の配置や形状によって決定され、これによりスク
リーン印刷に用いられるスクリーンマスク10のパター
ン孔10aの開口形状や配列が決定される。
Next, referring to FIG.
The details of the inspection items will be described. In FIG. 2A, a cream solder 5 is printed on a substrate 4. The printed part on which the cream solder 5 is to be printed is the substrate 4
And the shape and arrangement of the pattern holes 10a of the screen mask 10 used for screen printing are determined.

【0012】したがって、印刷検査においては基板4を
撮像して得られたクリーム半田5の印刷部位が、スクリ
ーンマスク10のパターン孔10aの開口形状や配列に
正しく対応したものとなっているか、さらに印刷高さが
正常であるか否かが判断される。
Therefore, in the printing inspection, whether the printed portion of the cream solder 5 obtained by imaging the substrate 4 correctly corresponds to the opening shape and the arrangement of the pattern holes 10a of the screen mask 10, and furthermore, the printing is performed. It is determined whether the height is normal.

【0013】すなわち、図2(b)に示すように、各ク
リーム半田5の印刷部位について、測定原点Oからの位
置を示すX,Y座標値、印刷されたクリーム半田5の長
さL、幅W、コーナ形状Rおよび印刷高さHが検出され
る。これらの計測は、高さ方向のデータが取得可能な3
次元の画像認識手法を用いて行われる。
That is, as shown in FIG. 2B, for the printed portion of each cream solder 5, X and Y coordinate values indicating the position from the measurement origin O, the length L and the width of the printed cream solder 5 W, corner shape R and printing height H are detected. These measurements are based on 3
This is performed using a dimensional image recognition technique.

【0014】以下この印刷検査に使用される検査用デー
タの作成方法について、図3のフロー図に沿って説明す
る。図3において、まず検査用データ作成対象の基板品
種に対応したスクリーンマスク10を用いて基板にクリ
ーム半田5の印刷を行い、マスター基板を作成する(S
T1)。このマスター基板は、印刷結果を目視確認して
印刷の欠けやにじみなどの印刷不良のないものが選定さ
れる。
Hereinafter, a method of creating inspection data used in the print inspection will be described with reference to the flowchart of FIG. In FIG. 3, first, cream solder 5 is printed on a board using a screen mask 10 corresponding to the board type for which inspection data is to be created, and a master board is created (S
T1). As the master substrate, a printing result is visually checked, and a printing substrate having no printing defects such as missing or blurred printing is selected.

【0015】次に、マスター基板をカメラで撮像し、検
査対象の印刷部位を認識する(ST2)。この撮像およ
び画像認識は、印刷検査装置のカメラを用いて行っても
よく、またそれ以外の画像認識装置を用いて行ってもよ
い。次いでマスター基板の認識結果から、検査用データ
のうち2次元データを抽出する(ST3)。すなわち、
ここでは各印刷部位の位置を示すX、Y座標値、印刷部
位の長さL、幅Wおよびコーナ形状Rの各データが取得
される。
Next, an image of the master substrate is taken by a camera, and a printed portion to be inspected is recognized (ST2). This imaging and image recognition may be performed using a camera of the print inspection device, or may be performed using another image recognition device. Next, two-dimensional data is extracted from the inspection data from the recognition result of the master substrate (ST3). That is,
Here, X and Y coordinate values indicating the position of each printing part, and data of the length L, width W, and corner shape R of the printing part are acquired.

【0016】次いで、スクリーンマスク10の厚み寸法
Tを高さデータとして読み込む(ST4)。すなわち、
ここでは印刷部位の高さデータとして撮像結果から画像
認識によってクリーム半田5の印刷高さを求めるのでは
なく、高さデータとしてスクリーンマスクの厚さ寸法T
そのものを用いる。
Next, the thickness T of the screen mask 10 is read as height data (ST4). That is,
Here, the print height of the cream solder 5 is not determined by image recognition from the image pickup result as the height data of the print part, but the thickness dimension T of the screen mask is determined as the height data.
Use itself.

【0017】このようにして得られた印刷部位の2次元
データと高さデータに基づき、印刷部位の3次元形状を
表す検査用データの編集を行い(ST5)、編集された
検査用データを印刷検査装置の記憶部に記憶させる(S
T6)。これにより検査用データの作成は終了する。そ
して印刷検査装置の稼働時には、検査対象基板の検査用
データを読み出しこの検査用データを用いて印刷検査が
行われる。
Based on the two-dimensional data and the height data of the printing part obtained in this way, the inspection data representing the three-dimensional shape of the printing part is edited (ST5), and the edited inspection data is printed. (S)
T6). Thus, the creation of the inspection data ends. Then, when the print inspection apparatus is operating, the inspection data of the inspection target substrate is read, and the print inspection is performed using the inspection data.

【0018】上記検査用データの作成方法は、スクリー
ン印刷工程で用いられるスクリーンマスクを用いて実際
に印刷して得られたマスター基板より検査対象の印刷部
位の2次元データを求めるものである。このため、検査
用データの作成に印刷パターンの数値座標データが不要
であるため、このようなデータを入手していないユーザ
ーにも採用可能な方法となっている。
In the above-described method of preparing inspection data, two-dimensional data of a print portion to be inspected is obtained from a master substrate obtained by actually printing using a screen mask used in a screen printing process. For this reason, it is not necessary to use the numerical coordinate data of the print pattern to create the inspection data, so that the method can be adopted by a user who does not have such data.

【0019】そして、マスター基板を用いる場合に従来
問題とされた印刷部位の高さデータについては、容易に
求めることが可能なスクリーンマスクの厚さ寸法をその
まま用いるようにしている。これにより、従来の問題点
を解消し印刷高さについても信頼性の高いクリーム半田
印刷の検査用データを、簡便な方法で作成することがで
き、検査精度を向上させることができる。
As for the height data of the printing portion, which has been conventionally regarded as a problem when the master substrate is used, the thickness dimension of the screen mask which can be easily obtained is used as it is. As a result, it is possible to create the cream solder printing inspection data with a simple method, which solves the conventional problems and has a high printing height and a high reliability, thereby improving the inspection accuracy.

【0020】[0020]

【発明の効果】本発明によれば、クリーム半田が印刷さ
れたマスター基板を撮像することにより印刷部位の2次
元データを取得すると共に、印刷に用いられたスクリー
ンマスクの厚み寸法を取り込んで印刷部位の高さデータ
とするようにしたので、印刷高さ目視判定の難度に起因
する検査用データ不良を防止して、簡便な方法で信頼性
の高い検査用データを容易に作成することができ、検査
精度を向上させることができる。
According to the present invention, two-dimensional data of a printed portion is obtained by imaging a master substrate on which cream solder is printed, and the thickness of a screen mask used for printing is captured to obtain the printed portion. Since the height data is used, it is possible to prevent the inspection data failure due to the difficulty of visual inspection of the printing height, and to easily create the reliable inspection data by a simple method, Inspection accuracy can be improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の一実施の形態の印刷検査装置の斜視図FIG. 1 is a perspective view of a print inspection apparatus according to an embodiment of the present invention.

【図2】(a)本発明の一実施の形態の検査対象基板お
よびスクリーンマスクの斜視図 (b)本発明の一実施の形態の検査対象基板およびスク
リーンマスクの部分拡大斜視図
2A is a perspective view of an inspection target substrate and a screen mask according to an embodiment of the present invention; FIG. 2B is a partially enlarged perspective view of an inspection target substrate and a screen mask of an embodiment of the present invention;

【図3】本発明の一実施の形態の印刷検査の検査用デー
タ作成のフロー図
FIG. 3 is a flowchart of creating inspection data for print inspection according to an embodiment of the present invention;

【符号の説明】[Explanation of symbols]

4 基板 5 クリーム半田 8 カメラ 10 スクリーンマスク 10a パターン孔 T 厚み寸法 H 印刷高さ 4 Board 5 Cream solder 8 Camera 10 Screen mask 10a Pattern hole T Thickness dimension H Printing height

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】スクリーン印刷後の基板を撮像し印刷され
たクリーム半田の印刷状態を画像認識により検査する印
刷検査装置に用いられる検査用データの作成方法であっ
て、クリーム半田が印刷されたマスター基板を撮像する
ことにより検査対象の印刷部位の2次元データを取得す
ると共に、印刷に用いられるスクリーンマスクの厚みデ
ータを前記印刷部位の高さデータとして取り込み、前記
2次元データと高さデータに基づいて前記印刷部位の3
次元形状を表す検査用データを作成することを特徴とす
る印刷検査装置の検査用データの作成方法。
1. A method for creating inspection data used in a print inspection apparatus for imaging a board after screen printing and inspecting the printed state of the printed cream solder by image recognition, comprising: a master on which the cream solder is printed. The substrate is imaged to obtain two-dimensional data of a print part to be inspected, and thickness data of a screen mask used for printing is taken in as height data of the print part, and based on the two-dimensional data and the height data. 3 of the printing part
A method for creating inspection data for a print inspection apparatus, which comprises creating inspection data representing a dimensional shape.
JP2000025036A 2000-02-02 2000-02-02 Method for creating inspection data for printing inspection apparatus Expired - Fee Related JP3680675B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000025036A JP3680675B2 (en) 2000-02-02 2000-02-02 Method for creating inspection data for printing inspection apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000025036A JP3680675B2 (en) 2000-02-02 2000-02-02 Method for creating inspection data for printing inspection apparatus

Publications (2)

Publication Number Publication Date
JP2001212933A true JP2001212933A (en) 2001-08-07
JP3680675B2 JP3680675B2 (en) 2005-08-10

Family

ID=18550953

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP3680675B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004058296A (en) * 2002-07-25 2004-02-26 Matsushita Electric Ind Co Ltd Apparatus and method for simulation of printing inspection
JP2005186284A (en) * 2003-12-24 2005-07-14 Matsushita Electric Ind Co Ltd Screen printing method
CN103419468A (en) * 2013-07-12 2013-12-04 上海百嘉电子有限公司 System and method for achieving holographic discoloration

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004058296A (en) * 2002-07-25 2004-02-26 Matsushita Electric Ind Co Ltd Apparatus and method for simulation of printing inspection
JP2005186284A (en) * 2003-12-24 2005-07-14 Matsushita Electric Ind Co Ltd Screen printing method
CN103419468A (en) * 2013-07-12 2013-12-04 上海百嘉电子有限公司 System and method for achieving holographic discoloration

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